package com.cloud.consul.comsumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;

/**
 * 服务消费
 *
 */
@SpringBootApplication
@EnableFeignClients
@EnableDiscoveryClient
public class ConsulComsumerApplication {
	public static void main(String[] args) {
		SpringApplication.run(ConsulComsumerApplication.class, args);
	}
	@Bean
	@LoadBalanced
	public RestTemplate restTemplate() {
		return new RestTemplate();
	}
	
	/**
	 * 此配置是为了服务监控而配置，与服务容错本身无关，
	 * ServletRegistrationBean因为springboot的默认路径不是"/hystrix.stream"，
	 * 只要在自己的项目里配置上下文的servlet就可以了
	 * 
	 * @return
	 */
	@SuppressWarnings({ "rawtypes", "unchecked" })
	@Bean
	public ServletRegistrationBean getServlet() {
		HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
		ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
		registrationBean.setLoadOnStartup(1);
		registrationBean.addUrlMappings("/actuator/hystrix.stream");
		registrationBean.setName("HystrixMetricsStreamServlet");
		return registrationBean;
	}
}
